Hi, My name is Lewis Sharman and I am a product design student at Sheffield Hallam University. I have recently been set a brief to design a set of compact speakers. I thought it may be an interesting idea to design a set of speakers to connect to an iPod/mp3 player or personal radio for use in agricultural vehicles. If you don't mind it would be great if you guys could help me out with a bit of research, I know a little as I grew up in the Suffolk countryside but thats nothing really! I understand maybe some older tractors may not have stereos fitted, is this right? I have also had a look at having a stereo fitted as an additional extra on a new tractor on the John Deere website and on the 9330 Tractor is either $650 or $974! If you were to purchase a new tractor would you pay that much for a fitted stereo or just not bother? If you like to listen to music while using a tractor without a fitted stereo do you use a personal radio/mp3 player? Or do you have say, an old radio that you take in the cab with you? Cheers for taking the time to read this, I hope you can help me out!